S
M
T
W
T
F
S
26
52°
41°
27
68°
37°
28
63°
41°
29
67°
50°
30
70°
47°
1
65°
43°
2
62°
48°
3
62°
48°
4
74°
59°
5
83°
63°
6
75°
55°
7
60°
49°
8
66°
47°
9
63°
49°
10
68°
48°
11
69°
51°
12
68°
51°
13
70°
55°
14
72°
56°
15
73°
56°
16
70°
55°
17
78°
60°
18
79°
60°
19
78°
59°
20
78°
61°
21
77°
60°
22
76°
53°
23
71°
53°
24
70°
55°
25
72°
56°
26
73°
57°
27
72°
54°
28
72°
57°
29
73°
55°
30
73°
59°
31
74°
63°
1
78°
63°
2
75°
61°
3
75°
62°
4
79°
64°
5
79°
64°
6
80°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Royal Oak
Royal Oak's May 2026 forecast shows daily high temperatures ranging from 60° to 83°, with overnight lows between 47° and 65°. The average high for May is 73° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Royal Oak. See also: June | July | August.